Title :
A high-speed BiCMOS switched-current track-and-hold circuit
Author :
Reimann, T. ; Krummenacher, F. ; Declercq, M.
Author_Institution :
Electron. Lab., Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
A fully differential switched-current mode twice interleaved track-and-hold circuit has been integrated in a 0.8 μm fT 12 GHz BiCMOS technology. Used as a single channel T&H circuit (not interleaved), measurements have shown a THD of -58 dB (9,3 bits) for a sampling frequency of 100 MHz under Nyquist condition. Furthermore, in the same operation mode, the circuit is also able to sample a 20 MHz FS input signal at 200 MHz while keeping a THD of -65 dB. The switched-current memory cell consumes 41 mW (excluding input and output stages) at 5 V. Operation in a twice interleaved mode is also presented
Keywords :
BiCMOS integrated circuits; high-speed integrated circuits; mixed analogue-digital integrated circuits; sample and hold circuits; signal sampling; switched current circuits; 0.8 mum; 12 GHz; 41 mW; 5 V; BiCMOS; FS input signal sampling; fully differential; switched-current; switched-current memory cell; track-and-hold circuit; twice interleaved mode; BiCMOS integrated circuits; Bipolar transistors; Circuit stability; Frequency; Integrated circuit technology; Multiplexing; Sampling methods; Switches; Switching circuits; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998
Conference_Location :
Santa Clara, CA
Print_ISBN :
0-7803-4292-5
DOI :
10.1109/CICC.1998.695003
